Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 651: If 0.0000152 x 0.042 = A x 10⁸, where 1 $\le$ A < 10, find A and B. Options:
  A) A = 9, B = 6.38
  B) A = 6.38, B = -9
  C) A = -6.38, B = -9
  D) A = -9, B = -6.38
  Show Answer
  The correct answer is B .
• Question 652: Solve the inequality x - 1 > 4(x + 2)
  Options:
  A) x > -3
  B) x < -3
  C) 2 < x < 3
  D) -3 < x < -2
  Show Answer
  The correct answer is B .
• Question 653: A car dealer bought a second-hand car for ₦250,000 and spent ₦70,000 refurbishing it. He then sold the car for ₦400,000. What is the percentage gain? Options:
  A) 60%
  B) 32%
  C) 25%
  D) 20%
  Show Answer
  The correct answer is C .
• Question 654: The amount A to which a principal P amounts at r% compound interest for n years is given by the formula A = P(1 + (r ÷ 100))n. Find A, if P = 126, r = 4 and n = 2. Options:
  A) ₦132.50K
  B) ₦136.30K
  C) ₦125.40K
  D) ₦257.42K
  Show Answer
  The correct answer is B .
• Question 655: Find the solution of the equation x + 2$\sqrt{x-8}$ = 0 Options:
  A) (4, 16)
  B) (2, 4)
  C) (4, 1)
  D) (1, 16)
  E) (16, 16)
  Show Answer
  The correct answer is A .
• Question 656: Arrange and $\frac{3}{5}$,$\frac{9}{16}$, $\frac{34}{59}$ and $\frac{71}{97}$ in ascending order of magnitude. Options:
  A) $\frac{3}{5}$, $\frac{9}{16}$, $\frac{34}{59}$, $\frac{71}{97}$
  B) $\frac{9}{16}$, $\frac{34}{59}$, $\frac{3}{5}$ , $\frac{71}{97}$
  C) $\frac{3}{5}$, $\frac{9}{16}$, $\frac{71}{97}$, $\frac{34}{59}$
  D) $\frac{9}{16}$, $\frac{3}{5}$, $\frac{71}{97}$, $\frac{34}{59}$
  Show Answer
  The correct answer is B .
• Question 657: a senatorial candidate had planned to visit seven cities prior to a primary election. However, he could only visit four of the cities. How many different itineraries could be considered? Options:
  A) 840
  B) 720
  C) 640
  D) 520
  Show Answer
  The correct answer is A .
• Question 658: Evaluate $\frac{81.81+99.44}{20.09+36.16}$ correct to 3 significant figures. Options:
  A) 6.24
  B) 3.22
  C) 2.78
  D) 2.13
  Show Answer
  The correct answer is B .
• Question 659: A polynomial in x whose roots are ⁴/₃ and -³/₅ is Options:
  A) 15x² - 11x – 12
  B) 15x² + 11x – 12
  C) 12x² - x – 12
  D) 12x² + 11x – 15
  Show Answer
  The correct answer is A .
• Question 660:

  $\begin{array}{cccccc}\text{Class Intervals}& 0-2& 3-5& 6-8& 9-11& \\ \text{Frequency}& 3& 2& 5& 3& \end{array}$

  Find the mode of the above distribution.

  Options:
  A) 9
  B) 8
  C) 10
  D) 7
  Show Answer
  The correct answer is D .